Portable crib



FIG. 1 is a perspective view of a portable crib showing our new design;

FIG. 2 is an elevational view showing one of the two identical sides;

FIG. 3 is an end elevational view, the opposite end being a mirror image thereof;

FIG. 4 is a bottom plan view; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a portable crib, as shown and described. 